Unsp inj extn musc/fasc/tend l idx fngr at wrs/hnd lv, init

This code signifies an undiagnosed injury to the extensor muscle, fascia, or tendon of the left index finger. The injury is located specifically at the wrist or hand level, indicating involvement of the structures responsible for extending the index finger.

Apply this code when documentation indicates an injury to the extextensor mechanism of the left index finger at the wrist/hand, but the specific nature of the injury (e.g., strain, tear, rupture) is not yet determined. This is appropriate for the initial presentation and treatment of such an injury.

• Ensure the documentation specifies the left index finger and the wrist/hand level.
• Only use this code for the initial encounter for treatment of the injury.
• If the specific injury type is known (e.g., strain, laceration), a more specific code should be used.